Digital Triple Output, 12-Phase PWM Controller

The ISL68239 is a digital triple output multiphase (X+Y+Z ≤ 12) PWM controller supporting PMBus v1.3/AVSBus interfaces. The controller can be configured to support any phase assignments up to a maximum of twelve phases across the three outputs (X, Y, and Z). For example, 10+1+1, 10+2, 8+2+1, 1+1, or even single output operation as a 12+0 configuration is supported. Increased power density, combined with support for the PMBus v1.3 interface, allows the device to support any demanding power supply requirement.

Additionally, the ISL68239 with AVSBus complements PMBus by providing a common high-speed interface to accelerate point-to-point communication between the controller and load to statically and dynamically control the processor voltage, delivering a balanced, power-efficient design.

The ISL68239 uses the proprietary Renesas digital synthetic current modulation scheme to achieve the industry-best combination of transient response, ease of tuning, and efficiency across the full load range. Diode emulation and automatic phase add/drop features allow you to extract maximum efficiency from the converter regardless of load conditions. You can use the intuitive PowerNavigator™ software to configure and monitor the device.

With minimal external components, easy configuration, robust fault management, and highly accurate regulation capability, implementing a high-performance, multiphase regulator has never been easier.